Table 1. Relative telomere length ratio and standard deviation calculated for NIH3T3 cells.

	Group	Relative telomere length ratio (mean±S.D.)
1	Control	1.674±0.115
2	H2O2	1.010±0.031*,a
3	D-gal	1.059±0.091*,a
4	pcDNA3.1	1.587±0.064
5	pcDNA3.1-Zfp637	1.626±0.087
6	pcDNA3.1+H2O2	0.916±0.031
7	pcDNA3.1-Zfp637+H2O2	1.262±0.068*,b
8	pcDNA3.1+D-gal	1.017±0.077
9	pcDNA3.1-Zfp637+D-gal	1.376±0.050*,c
10	shNC	1.607±0.161
11	shZfp637	1.634±0.072
12	shNC+H2O2	0.981±0.119
13	shZfp637+H2O2	0.645±0.043*,d
14	shNC+D-gal	1.069±0.074
15	shzfp637+D-gal	0.725±0.099*,e

Abbreviations: D-gal, D-galactose; Zfp637, zinc finger protein 637

*P<0.05

^aCompare with group 1

^bCompare with group 6

^cCompare with group 8

^dCompare with group 12

^eCompare with group 14